Clock



FIG. 1 is a perspective view of the clock of the present design;

FIG. 2 is a front view of the clock shown in FIG. 1;

FIG. 3 is a rear view of the clock shown in FIG. 1;

FIG. 4 is a right side view of the clock of FIG. 1;

FIG. 5 is a left side view of the clock of FIG. 1;

FIG. 6 is an bottom view of the clock of FIG. 1; and,

FIG. 7 is an top view of the clock in FIG. 1. 

CLAIM The ornamental design for a clock, as shown and described. 